Method of making open-face envelops.



- G. W. SWIFT, JR.

METHOD OF MAKING OPEN FACE ENVELOPS.

APPLICATION FILED MAR. 25.1915.

1,199,218. 1 PatentedSept. 26,1916.

WITNESSES: INVENTOR:

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GEORGE w. SWIFT, JE., F BORDENTOWN, NEW JERSEY.

METHOD OF MAKING OPEN-FACE ENVELOPS.

Specification of Letters Patent Patented Sept. 26,1916.

Application filed March 25, 1915.- Serial No. 16,870.

To all whom it may concern:

Be it known that; I, GEORGE W. SWIFT,

J r., a citizen of the United States, residing at Bordentown, in the State of New Jersey, have invented a certain new and useful Improvement in Methods of Making Open- I Face Envelops, whereof the following is a when such envelops are thus made, either by 7 hand or by machinery, means must be employed to cut and. precisely locate such patches, with corresponding cost of manufacture.

\ Therefore, it is the object of my inven-,

tion to not onlyobviate the necessity of forming individual patches of the transparent material before the attachment there: of to the envelop blanks but also to obviate the necessity for means for precisely locating the patches upon the respective envelops.

As hereinafter described, the essential feature of my invention is that the trans- Fig. II is a plan view of said web with open-- parent or translucent material is applied to the web from which the envelop blanks are subsequently formed, and before the formation of said blanks, and in a continuous strip -which is commonto a series of the subsequently severed blanks.

My invention includes the various novel features hereinafter more definitely specified and claimed.

In the drawing, Figure I is a plan view of a web of paper or other suitable flexible fabric from which envelops may beformed.

ings formed therein in such spaced relation as to appear in proper posltion in the envelop blanks subsequently formed there from. Fig. III is a plan view of said webv with a strip of transparent or translucent fabric or material attached thereto, covering said openings and common to a series of thein. Fig. IV is a plan view of an individual blank cut from the web shown in the preceding figures and creased where it is to be folded. Fig. V is a front view of an envelop formed from the blank shown in Fig. IV. Fig. V1 is a rear view of'said en-;

velop shown in' Fig. V. Fig. VII is a fragmentary sectional view taken on the line VII in Figs. V and VI.

In accordance with my method, the primarily imperforate web 1 shown in Fig. I

is progressed relatively to suitable punching mechanism and perforated by the latter, to form successive openings 2 therein as indicated in Fig. II; said openings being in such spaced relation as to appear in respective individual envelop blanks 4 in the position indicated in dotted lines at the right hand end of Fig. III. I find it convenient to progress said web 1 by frictional.

engagement thereof between rollers disposed with their axes in parallel relation respectively upon opposite sides of said web 1 and form the openings 2 by rotary punch rollers which are similarly disposed. The

next step in the operation is to apply adhesive material 6 at the margins'of said openings 2 as indicated at the right hand end of FigQII. I find it convenient to apply said adhesive by means of a roller which i is mounted upon one side of said web with its axis extending transversely thereto, and

in opposition to another roller upon the opl posite side of said web. The next step in the operation is to apply the strip of transparent or translucent fabric 8 so that it is permanently attached to the web 1 by the adhesive 6, so as to cover the openings 2 in said web and extend continuously over a series of them as shown in Fig. III. The

next step in the operation is to cut from said web 1, shown in Fig. III, a succession of envelop blanks of the configuration indicated at 4 in said figure. Such cutting is also conveniently effected by a pair of punch I rollers disposed with their axes parallel and upon, respectively opposite sides of said web.

Each of the individual envelop blanks 4- is, of course, primarily plane, and I find it convenient to crease the same as indicated by the dash lines 10 in Fig. IV, where the blank is to be folded to form the envelop flaps, and such creasing may be effected either simultaneously with the severance of :the blank from the web 1 orasa previous .or subsequent step in the o era-tion. In

either case, the blank is provi ed with ad V as defined in the appended hesive 11 upon its flaps 12 and 13, as shown in Fig. IV, and the flap 14: is then folded over the strip 8 and secured by inwardly folding the flaps 13 to form the envelop shown in Figs. V and VI.

As shown in Fig. VII, it may be observed that the strip 8 reinforces the ends of the envelop, within the flaps 13, at the regions of the envelop in line with the openings 2, which otherwise would be the weaker portions of the envelop. Although itis unnecessary to do so, the strip 8 may be applied to the web 1 under slightly greater tension than the latter, so that, when relaxed, each of the portions of said strip applied to an envelop blank is of slightly less length'than the blank to which. it is attached and the ends of said strip are covered by the flaps 13 projecting beyond them as indicated in Fig. VII. Such construction and arrangement is preferable, because the translucent fabric 8 is of a color different from that of Y the web 1, and, consequently, if allowed to project beyond the ends of the flaps 13, presents an unsightly appearance.

I do not desire 'to limit myself to the precise details of the procedure above described, as it is obvious that various modifications may be made therein without departing from the essential features of my invention claims.

Iv claim 1. The method of making open face en velops, which consists in forming a series of openings in a web, in such spaced relation that said web may be subsequently divided to form individual envelop blanks each including one of said openings; then coating said web with adhesive material at the margins-of said openings; then applying a transparent or translucent material to said web, before the formation "of said klatter; said strip being maintained under greater tension than said web unt1l attached blanks, and in a continuous imperforat strip of uniform width which is common to a series of said openings and covering the latter; said strip being under reater tension than said web until applied thereto;

then and simultaneously dividing said web and strip to form respective individual envelop blanks each including one of said openings and a portion of said strip cover- .ing the same; then folding said blanks to form envelops, each with a portion of said strip upon the'inner side of the front wall thereof and overlapping the outer side of the rear wall thereof,at each end thereof.

2. The method of making open face envelops, which consists in forming a series of openings in a web, in such spaced relation that said web may be subsequently divided to form individual envelop' blanks each including one of said openings; then coating said web with adhesive material at the margins of said openings; then applying a transparent or translucent material to said web, before the formation of said blanks, and in a continuous strip whichi's common to a series of said openings and covering the latter; said strip being under greater tension than said web' until applied thereto;

then dividing said web to form respective individual envelop blanks each including one ofsaid openings and a portion of said strip covering the same; then folding said blanks to form envelops, each with a portion of said strip upon the inner side of the front wall thereof.

3. In a method of making open face en- .velops; forming a series of openings in a web, in such spaced relation that-said web may be subsequently divided to form individual envelop blanks each including one of said openings; then coating said web with adhesive material at the margins of said openings; then applying a transparent or translucent material to said web, before the formation of said blanks, and in a continuous imperforate strip of uniform width which is common to a series of said openings, and covering the latter; said strlp being under greater tension than said web until applied thereto; then dividing said web to form respective individual envelop blanks each including one of said openings and a portion of said strip covering the same;

4. The step in the method of making open face envelops, which consists in attachlng to a web, having a series of openings in such spaced relation that said web may be subsequently divided to form individual envelop blanks each including one of said openings, a translucent strip common to a series of said openings and covering the to the latter.

5. The step in the method of making open face envelops, by attaching a translucent strip to a web having .a series of openings in such spaced relation that said webmay be subsequently divided to form individual envelop blanks each including one of said openings, which consists in mainta ning said strip under greater tension than said web until attached to the latter.

.In testimony whereof, I have hereunto signed my name at Bordentown, New Jersey, this sixth day of March, 1915.

GEORGE w.. SWIFT, JR.

Witnesses PHILIP T. H. BRAKELEY,

R. H. AABONSON. 

